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|
package main
import (
"compress/gzip"
"context"
"crypto/sha256"
"encoding/xml"
"fmt"
"html/template"
"io"
"mime"
"net/http"
"os"
"os/exec"
"path/filepath"
"slices"
"strconv"
"strings"
"sync"
"time"
)
func (s *Server) star(w http.ResponseWriter, r *http.Request, repo Repo) {
u := s.require(w, r)
if u == nil {
return
}
s.store.Star(u.ID, repo.ID, !s.store.Starred(u.ID, repo.ID))
http.Redirect(w, r, "/"+repo.Path(), http.StatusSeeOther)
}
func (s *Server) renameRepo(w http.ResponseWriter, r *http.Request, repo Repo) {
rp, _, _ := s.repoPage(r, repo, "")
if !rp.IsOwner {
s.fail(w, r, 403, "Not your repository")
return
}
name := strings.TrimSpace(r.FormValue("name"))
back := "/" + repo.Path() + "/settings"
if name == repo.Name {
http.Redirect(w, r, back, http.StatusSeeOther)
return
}
if err := s.store.RenameRepo(repo.ID, name); err != nil {
http.Redirect(w, r, back+"?error="+template.URLQueryEscaper(err.Error()), http.StatusSeeOther)
return
}
renamed := repo
renamed.Name = name
if err := os.Rename(s.repoDir(repo), s.repoDir(renamed)); err != nil {
s.store.RenameRepo(repo.ID, repo.Name)
http.Redirect(w, r, back+"?error="+template.URLQueryEscaper(err.Error()), http.StatusSeeOther)
return
}
s.store.AddRedirect(repo.Owner.Name, repo.Name, repo.ID)
http.Redirect(w, r, "/"+renamed.Path()+"/settings", http.StatusSeeOther)
}
func (s *Server) transferRepo(w http.ResponseWriter, r *http.Request, repo Repo) {
rp, _, _ := s.repoPage(r, repo, "")
if !rp.IsOwner {
s.fail(w, r, 403, "Not your repository")
return
}
back := "/" + repo.Path() + "/settings"
target, err := s.store.UserByName(strings.TrimSpace(strings.TrimPrefix(r.FormValue("owner"), "~")))
if err != nil {
http.Redirect(w, r, back+"?error=No+such+user", http.StatusSeeOther)
return
}
if target.ID == repo.Owner.ID {
http.Redirect(w, r, back, http.StatusSeeOther)
return
}
if r.FormValue("confirm") != repo.Name {
http.Redirect(w, r, back+"?error=Type+the+repository+name+to+confirm+the+transfer", http.StatusSeeOther)
return
}
if err := s.store.TransferRepo(repo.ID, target.ID); err != nil {
http.Redirect(w, r, back+"?error="+template.URLQueryEscaper(err.Error()), http.StatusSeeOther)
return
}
moved := repo
moved.Owner = target
os.MkdirAll(filepath.Dir(s.repoDir(moved)), 0o755)
if err := os.Rename(s.repoDir(repo), s.repoDir(moved)); err != nil {
s.store.TransferRepo(repo.ID, repo.Owner.ID)
http.Redirect(w, r, back+"?error="+template.URLQueryEscaper(err.Error()), http.StatusSeeOther)
return
}
s.store.AddRedirect(repo.Owner.Name, repo.Name, repo.ID)
s.notify(s.store.VerifiedEmail(target.ID), fmt.Sprintf("[%s] repository transferred to you", moved.Path()),
fmt.Sprintf("~%s transferred %s to you. It now lives at https://%s/%s\n", repo.Owner.Name, repo.Name, s.host, moved.Path()))
http.Redirect(w, r, "/"+moved.Path(), http.StatusSeeOther)
}
func (s *Server) archiveRepo(w http.ResponseWriter, r *http.Request, repo Repo) {
rp, _, _ := s.repoPage(r, repo, "")
if !rp.IsOwner {
s.fail(w, r, 403, "Not your repository")
return
}
s.store.SetArchived(repo.ID, !repo.Archived)
http.Redirect(w, r, "/"+repo.Path()+"/settings", http.StatusSeeOther)
}
type BlameLine struct {
Hash string
Author string
Time time.Time
Line int
Text string
First bool
Subject string
}
func (g Git) Blame(commit, filePath string) ([]BlameLine, error) {
out, err := g.run(nil, "blame", "--porcelain", commit, "--", filePath)
if err != nil {
return nil, err
}
meta := map[string]*BlameLine{}
var lines []BlameLine
var cur *BlameLine
for _, line := range strings.Split(string(out), "\n") {
switch {
case strings.HasPrefix(line, "\t"):
if cur != nil {
cur.Text = line[1:]
lines = append(lines, *cur)
cur = nil
}
case cur == nil:
f := strings.Fields(line)
if len(f) < 3 || len(f[0]) != 40 {
continue
}
n, _ := strconv.Atoi(f[2])
base := meta[f[0]]
if base == nil {
base = &BlameLine{Hash: f[0]}
meta[f[0]] = base
}
cur = &BlameLine{Hash: f[0], Author: base.Author, Time: base.Time, Subject: base.Subject, Line: n}
case strings.HasPrefix(line, "author "):
meta[cur.Hash].Author = strings.TrimPrefix(line, "author ")
cur.Author = meta[cur.Hash].Author
case strings.HasPrefix(line, "author-time "):
t, _ := strconv.ParseInt(strings.TrimPrefix(line, "author-time "), 10, 64)
meta[cur.Hash].Time = time.Unix(t, 0)
cur.Time = meta[cur.Hash].Time
case strings.HasPrefix(line, "summary "):
meta[cur.Hash].Subject = strings.TrimPrefix(line, "summary ")
cur.Subject = meta[cur.Hash].Subject
}
}
prev := ""
for i := range lines {
lines[i].First = lines[i].Hash != prev
prev = lines[i].Hash
}
return lines, nil
}
func (s *Server) blame(w http.ResponseWriter, r *http.Request, repo Repo, spec string) {
g := Git{Dir: s.repoDir(repo)}
ref, filePath, ok := s.splitRef(g, spec)
if !ok {
s.fail(w, r, 404, "No such ref")
return
}
filePath, ok = cleanPath(filePath)
if !ok || filePath == "" {
s.fail(w, r, 404, "No such path")
return
}
rp, g, err := s.repoPage(r, repo, ref)
if err != nil {
s.fail(w, r, 404, "No such ref")
return
}
rp.Tab = "tree"
if g.Size(rp.Commit, filePath) > maxRender {
s.fail(w, r, 413, "File too large to blame")
return
}
lines, err := g.Blame(rp.Commit, filePath)
if err != nil {
s.fail(w, r, 404, "No such path")
return
}
crumbs := strings.Split(filePath, "/")
data := map[string]any{"Page": rp, "Path": filePath, "Crumbs": crumbs, "Lines": lines, "File": true, "Blame": true}
if entry := g.Entry(rp.Commit, filePath); entry != nil {
data["Entry"] = entry
}
if last, _ := g.Log(rp.Commit, 1, filePath); len(last) > 0 {
data["LastCommit"] = last[0]
}
s.render(w, r, "blame", page{Title: repo.Path() + "/" + filePath + " blame", Data: data})
}
func (s *Server) compare(w http.ResponseWriter, r *http.Request, repo Repo, spec string) {
rp, g, err := s.repoPage(r, repo, "")
if err != nil {
s.fail(w, r, 404, "No such ref")
return
}
rp.Tab = "log"
branches, _ := g.Refs("refs/heads")
data := map[string]any{"Page": rp, "Branches": branches}
base, head, ok := strings.Cut(spec, "...")
if !ok {
base, head = r.URL.Query().Get("base"), r.URL.Query().Get("head")
}
data["Base"], data["Head"] = base, head
if base != "" && head != "" {
bh, err1 := g.Resolve(base)
hh, err2 := g.Resolve(head)
if err1 != nil || err2 != nil {
s.fail(w, r, 404, "No such ref")
return
}
if mb, err := g.MergeBase(bh, hh); err == nil {
commits, _ := g.LogRange(mb, hh, 200)
files, _ := g.DiffRange(mb, hh)
added, removed := 0, 0
for _, f := range files {
added += f.Added
removed += f.Removed
}
data["Commits"], data["Files"], data["Added"], data["Removed"], data["HeadHash"] = commits, files, added, removed, hh
} else {
data["Unrelated"] = true
}
}
s.render(w, r, "compare", page{Title: repo.Path() + " compare", Data: data})
}
func (s *Server) download(w http.ResponseWriter, r *http.Request, repo Repo, spec string) {
g := Git{Dir: s.repoDir(repo)}
digest := strings.HasSuffix(spec, ".sha256")
spec = strings.TrimSuffix(spec, ".sha256")
format := ""
switch {
case strings.HasSuffix(spec, ".tar.gz"):
format, spec = "tar.gz", strings.TrimSuffix(spec, ".tar.gz")
case strings.HasSuffix(spec, ".zip"):
format, spec = "zip", strings.TrimSuffix(spec, ".zip")
default:
s.fail(w, r, 404, "Use .tar.gz or .zip")
return
}
commit, err := g.Resolve(spec)
if err != nil {
s.fail(w, r, 404, "No such ref")
return
}
safe := strings.Map(func(r rune) rune {
if r >= 'a' && r <= 'z' || r >= 'A' && r <= 'Z' || r >= '0' && r <= '9' || r == '.' || r == '_' || r == '-' {
return r
}
return '-'
}, spec)
name := repo.Name + "-" + safe
file := name + "." + format
ctx, cancel := context.WithTimeout(r.Context(), 10*time.Minute)
defer cancel()
if digest {
sum := sha256.New()
if err := writeArchive(ctx, sum, g.Dir, format, name, commit); err != nil {
s.fail(w, r, 500, "Could not build the archive")
return
}
w.Header().Set("Content-Type", "text/plain; charset=utf-8")
fmt.Fprintf(w, "%x %s\n", sum.Sum(nil), file)
return
}
w.Header().Set("ETag", `"`+commit+"-"+format+`"`)
if commit == spec {
w.Header().Set("Cache-Control", cacheScope(repo)+", max-age=31536000, immutable")
}
if r.Header.Get("If-None-Match") == `"`+commit+"-"+format+`"` {
w.WriteHeader(http.StatusNotModified)
return
}
w.Header().Set("Content-Type", "application/octet-stream")
w.Header().Set("Content-Disposition", mime.FormatMediaType("attachment", map[string]string{"filename": file}))
writeArchive(ctx, w, g.Dir, format, name, commit)
}
func writeArchive(ctx context.Context, w io.Writer, dir, format, name, commit string) error {
select {
case archiveSlots <- struct{}{}:
case <-ctx.Done():
return ctx.Err()
}
defer func() { <-archiveSlots }()
gitFormat := format
if format == "tar.gz" {
gitFormat = "tar"
}
cmd := exec.CommandContext(ctx, "git", "-C", dir, "-c", "core.autocrlf=false", "archive", "--format="+gitFormat, "--prefix="+name+"/", commit)
cmd.Env = []string{"GIT_CONFIG_NOSYSTEM=1", "HOME=/nonexistent", "TZ=UTC", "PATH=" + os.Getenv("PATH")}
if format != "tar.gz" {
cmd.Stdout = w
return cmd.Run()
}
zw, _ := gzip.NewWriterLevel(w, gzip.BestCompression)
zw.OS = 255
cmd.Stdout = zw
if err := cmd.Run(); err != nil {
return err
}
return zw.Close()
}
type atomFeed struct {
XMLName xml.Name `xml:"feed"`
NS string `xml:"xmlns,attr"`
Title string `xml:"title"`
ID string `xml:"id"`
Updated string `xml:"updated"`
Link atomLink `xml:"link"`
Entries []atomEntry `xml:"entry"`
}
type atomLink struct {
Href string `xml:"href,attr"`
}
type atomEntry struct {
Title string `xml:"title"`
ID string `xml:"id"`
Updated string `xml:"updated"`
Author string `xml:"author>name"`
Link atomLink `xml:"link"`
Content string `xml:"content"`
}
func (s *Server) feed(w http.ResponseWriter, r *http.Request, repo Repo) {
rp, g, err := s.repoPage(r, repo, r.URL.Query().Get("ref"))
if err != nil {
s.fail(w, r, 404, "No such ref")
return
}
base := "https://" + s.host + "/" + repo.Path()
feed := atomFeed{NS: "http://www.w3.org/2005/Atom", Title: repo.Path() + " commits on " + rp.Ref, ID: base + "/feed", Link: atomLink{Href: base}, Updated: time.Now().UTC().Format(time.RFC3339)}
if !rp.Empty {
commits, _ := g.Log(rp.Commit, 30, "")
for _, c := range commits {
feed.Entries = append(feed.Entries, atomEntry{Title: c.Subject, ID: base + "/commit/" + c.Hash, Updated: c.Time.UTC().Format(time.RFC3339), Author: c.Author, Link: atomLink{Href: base + "/commit/" + c.Hash}, Content: c.Body})
}
if len(commits) > 0 {
feed.Updated = commits[0].Time.UTC().Format(time.RFC3339)
}
}
writeFeed(w, feed)
}
func writeFeed(w http.ResponseWriter, feed atomFeed) {
feed.NS = "http://www.w3.org/2005/Atom"
if feed.Updated == "" {
feed.Updated = time.Unix(0, 0).UTC().Format(time.RFC3339)
}
w.Header().Set("Content-Type", "application/atom+xml; charset=utf-8")
w.Write([]byte(xml.Header))
xml.NewEncoder(w).Encode(feed)
}
func stamp(t time.Time) string {
return t.UTC().Format(time.RFC3339)
}
func (s *Server) issueFeed(w http.ResponseWriter, r *http.Request, repo Repo) {
issues, _ := s.store.Issues(repo.ID, "")
base := "https://" + s.host + "/" + repo.Path() + "/issues"
feed := atomFeed{Title: repo.Path() + " issues", ID: base + "/feed", Link: atomLink{Href: base}}
for i, is := range issues {
if i == 50 {
break
}
if feed.Updated == "" {
feed.Updated = stamp(is.Updated)
}
link := fmt.Sprintf("%s/%d", base, is.Number)
feed.Entries = append(feed.Entries, atomEntry{Title: fmt.Sprintf("#%d %s [%s]", is.Number, is.Title, is.State), ID: link, Updated: stamp(is.Updated), Author: "~" + is.Author.Name, Link: atomLink{Href: link}, Content: is.Body})
}
writeFeed(w, feed)
}
func (s *Server) pullFeed(w http.ResponseWriter, r *http.Request, repo Repo) {
pulls, _ := s.store.Pulls(repo, "")
slices.SortStableFunc(pulls, func(a, b Pull) int { return b.Updated.Compare(a.Updated) })
base := "https://" + s.host + "/" + repo.Path() + "/pulls"
feed := atomFeed{Title: repo.Path() + " pull requests", ID: base + "/feed", Link: atomLink{Href: base}}
for i, p := range pulls {
if i == 50 {
break
}
if feed.Updated == "" {
feed.Updated = stamp(p.Updated)
}
link := fmt.Sprintf("%s/%d", base, p.Number)
feed.Entries = append(feed.Entries, atomEntry{Title: fmt.Sprintf("#%d %s [%s]", p.Number, p.Title, p.State), ID: link, Updated: stamp(p.Updated), Author: "~" + p.Author.Name, Link: atomLink{Href: link}, Content: p.Body})
}
writeFeed(w, feed)
}
func (s *Server) userFeed(w http.ResponseWriter, r *http.Request, owner User) {
repos, _ := s.store.ReposByOwner(owner.ID, false)
type entry struct {
repo Repo
commit Commit
}
var all []entry
for _, repo := range repos {
if repo.Unlisted {
continue
}
g := Git{Dir: s.repoDir(repo)}
head, err := g.Resolve("HEAD")
if err != nil {
continue
}
commits, _ := g.Log(head, 20, "")
for _, c := range commits {
all = append(all, entry{repo, c})
}
}
slices.SortStableFunc(all, func(a, b entry) int { return b.commit.Time.Compare(a.commit.Time) })
base := "https://" + s.host + "/~" + owner.Name
feed := atomFeed{Title: "~" + owner.Name + " commits", ID: base + "/feed", Link: atomLink{Href: base}}
for i, e := range all {
if i == 50 {
break
}
if feed.Updated == "" {
feed.Updated = stamp(e.commit.Time)
}
link := "https://" + s.host + "/" + e.repo.Path() + "/commit/" + e.commit.Hash
feed.Entries = append(feed.Entries, atomEntry{Title: e.repo.Name + ": " + e.commit.Subject, ID: link, Updated: stamp(e.commit.Time), Author: e.commit.Author, Link: atomLink{Href: link}, Content: e.commit.Body})
}
writeFeed(w, feed)
}
type repoHistory struct {
stamp time.Time
commits []historyCommit
}
type historyCommit struct {
hash uint64
day int32
email int32
}
var histories = struct {
sync.Mutex
repos map[int64]repoHistory
emails map[string]int32
}{repos: map[int64]repoHistory{}, emails: map[string]int32{}}
func (s *Server) history(repo Repo) []historyCommit {
dir := s.repoDir(repo)
stamp := repoUpdated(dir)
histories.Lock()
h, ok := histories.repos[repo.ID]
histories.Unlock()
if ok && h.stamp.Equal(stamp) {
return h.commits
}
out, err := Git{Dir: dir}.run(nil, "log", "--all", "--no-merges", "--format=%H%x09%at%x09%ae")
if err != nil {
return nil
}
var commits []historyCommit
histories.Lock()
for _, line := range strings.Split(string(out), "\n") {
f := strings.Split(line, "\t")
if len(f) != 3 || len(f[0]) < 16 {
continue
}
hash, err := strconv.ParseUint(f[0][:16], 16, 64)
if err != nil {
continue
}
sec, _ := strconv.ParseInt(f[1], 10, 64)
email := strings.ToLower(f[2])
id, ok := histories.emails[email]
if !ok {
id = int32(len(histories.emails))
histories.emails[email] = id
}
commits = append(commits, historyCommit{hash, int32(sec / 86400), id})
}
histories.repos[repo.ID] = repoHistory{stamp, commits}
histories.Unlock()
return commits
}
var activityCache = struct {
sync.Mutex
m map[int64]activityEntry
}{m: map[int64]activityEntry{}}
type activityEntry struct {
at time.Time
counts map[string]int
}
func (s *Server) activityCounts(owner User) map[string]int {
activityCache.Lock()
e, ok := activityCache.m[owner.ID]
activityCache.Unlock()
if ok && time.Since(e.at) < 30*time.Second {
return e.counts
}
counts := s.countActivity(owner)
activityCache.Lock()
if len(activityCache.m) > 4096 {
clear(activityCache.m)
}
activityCache.m[owner.ID] = activityEntry{time.Now(), counts}
activityCache.Unlock()
return counts
}
func (s *Server) countActivity(owner User) map[string]int {
counts := map[string]int{}
org := s.store.IsOrg(owner.ID)
email := strings.ToLower(s.store.VerifiedEmail(owner.ID))
if email == "" && !org {
return counts
}
want := int32(-1)
if !org {
histories.Lock()
id, ok := histories.emails[email]
histories.Unlock()
if ok {
want = id
}
}
seen := map[uint64]bool{}
repos, _ := s.store.PublicRepos("", "")
for _, repo := range repos {
if org && repo.Owner.ID != owner.ID {
continue
}
commits := s.history(repo)
if !org && want < 0 {
histories.Lock()
if id, ok := histories.emails[email]; ok {
want = id
}
histories.Unlock()
}
for _, c := range commits {
if (!org && c.email != want) || seen[c.hash] {
continue
}
seen[c.hash] = true
counts[time.Unix(int64(c.day)*86400, 0).UTC().Format("2006-01-02")]++
}
}
return counts
}
type heatView struct {
Grid template.HTML
Total int
Year int
Years []int
}
func (s *Server) activity(owner User, year int) heatView {
counts := s.activityCounts(owner)
today := time.Now().UTC().Truncate(24 * time.Hour)
years := map[int]bool{}
for y := min(owner.Created.UTC().Year(), today.Year()); y <= today.Year(); y++ {
years[y] = true
}
for day := range counts {
y, _ := strconv.Atoi(day[:4])
years[y] = true
}
view := heatView{Year: year}
for y := range years {
view.Years = append(view.Years, y)
}
slices.SortFunc(view.Years, func(a, b int) int { return b - a })
first, last := today.AddDate(0, 0, -364), today
if year != 0 {
first = time.Date(year, 1, 1, 0, 0, 0, 0, time.UTC)
last = time.Date(year, 12, 31, 0, 0, 0, 0, time.UTC)
}
start := first.AddDate(0, 0, -int(first.Weekday()))
weeks := int(last.Sub(start).Hours()/24)/7 + 1
peak := 0
for d := first; !d.After(last); d = d.AddDate(0, 0, 1) {
n := counts[d.Format("2006-01-02")]
peak = max(peak, n)
view.Total += n
}
var b strings.Builder
fmt.Fprintf(&b, `<div class="heat" style="--weeks:%d"><div class="months">`, weeks)
lastMonth := -1
for w := 0; w < weeks; w++ {
d := start.AddDate(0, 0, 7*w)
if d.Before(first) {
d = first
}
if int(d.Month()) != lastMonth && w < weeks-2 {
lastMonth = int(d.Month())
fmt.Fprintf(&b, `<span style="grid-column:%d">%s</span>`, w+1, d.Format("Jan"))
}
}
b.WriteString(`</div><div class="days"><span></span><span>Mon</span><span></span><span>Wed</span><span></span><span>Fri</span><span></span></div><div class="cells">`)
for d := start; !d.After(last) || d.Weekday() != 0; d = d.AddDate(0, 0, 1) {
if d.Before(first) || d.After(last) {
b.WriteString(`<span class="pad"></span>`)
continue
}
n := counts[d.Format("2006-01-02")]
level := 0
if n > 0 {
level = 1 + min(3, (n-1)*4/max(peak, 1))
}
tip := "No commits"
if n == 1 {
tip = "1 commit"
} else if n > 1 {
tip = strconv.Itoa(n) + " commits"
}
tip += " on " + d.Format("2 January 2006")
week := int(d.Sub(start).Hours()/24) / 7
edge := ""
if week < 6 {
edge = " l"
} else if week > weeks-7 {
edge = " r"
}
fmt.Fprintf(&b, `<span class="c h%d%s" data-tip="%s" aria-label="%s" tabindex="0"></span>`, level, edge, tip, tip)
}
b.WriteString(`</div></div>`)
view.Grid = template.HTML(b.String())
return view
}
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